请帮忙分析句子成分1.Tom is a junior high school student .
4个回答

Tom (主语)

is(谓语)

a junior high school student (表语)属于主语补足语的成分

主语补足语,通常位于主语之前或谓语动词之后,当然放在谓语动词被动语态的过去分词之后,

一般表语都属于主语补语.

如i feel nervous.

nervous即是表语也是主语补语.

被动语态时,主语补语不是表语.

如He was caught alive.

alive是主语补语,不是表语

①主语补语位于主语之前,后有逗号

例:Tired and sleepy,I went to bed

②有时位于主语之后,前后皆有逗号

例:Chen,only 1.30 metres tall,won the first prize.

③位于谓语动词之后

例:He died young

He was found died.

④除形容词外,名词、数词、不定式,分词,介词短语,从句也可作主语补足语.例:He came home quite changed.